<?php

	/* [1] Initialization
	=========================================================*/
	/* (1) Header */
	header('Content-Type: plain/text');

	/* (2) Checks arguments */
	if( empty($_POST) || !isset($_POST['command']) )
		die('error');


	/* [2] Data storage
	=========================================================*/
	/* (1) If have to store data */
	if( $_POST['command'] === 'store' && !empty($_POST['data']) ){

		/* (2) Stores data */
		file_put_contents( dirname(__FILE__).'/storage.json', $_POST['data']);

		/* (3) Close connection */
		die('success');

	/* [3] Data fetch
	=========================================================*/
	/* (1) Checks command */
	}elseif( $_POST['command'] === 'fetch' ){

		/* (2) Returns data */
		die( file_get_contents( dirname(__FILE__).'/storage.json') );
	}


	/* [4] If nothing happened -> error
	=========================================================*/
	die('error');